In dense urban cities like Shanghai, Beijing, Shenzhen, and Hong Kong, a balcony is often the only outdoor space a home has. But all too often, that balcony becomes a dumping ground for storage boxes, drying laundry, and forgotten exercise equipment. What if instead of letting that space go to waste, you integrated it into your living room? Merging a balcony with the adjacent living room is one of the highest-ROI renovations you can do in a small apartment. It can add 30-80 square feet of usable living space, improve natural light, and increase your property value.

Before You Start: Structural and Legal Considerations

The first step is not design —it is legality and safety. In China, regulations around balcony modifications vary by city and even by housing complex. Some buildings classify balconies as structural elements that cannot be enclosed or modified. Others allow removal of sliding doors and window installation but prohibit structural changes. Before doing anything, check with your property management company and local housing authority. You may need to submit drawings and obtain approval. The structural integrity of the balcony is also critical. Most apartment balconies are designed to hold a uniform load of about 300 kg per square meter (61 psf). This is sufficient for furniture, plants, and people, but not for heavy items like a bathtub, a grand piano, or a water feature. If you plan to install heavy furniture, check the load rating with the building's structural engineer. The good news: removing the sliding door between the living room and balcony is almost always safe since the door frame is not structural. But never remove or modify the load-bearing wall above or beside the door opening.

Option 1: Full Integration (Remove the Sliding Door)

The most dramatic transformation is to remove the sliding glass door entirely, creating one continuous space. This is ideal when the balcony is at least 4 feet (1.2m) deep and the living room is too small for comfortable furniture placement. When the door is removed, you need to address three things: flooring, ceiling, and temperature. The flooring should be raised or leveled so that the living room floor and balcony floor are at the same height. If the balcony is lower than the living room (as is common for drainage), you will need to build up the balcony floor with a leveling compound or a wooden subfloor. For the ceiling, the balcony typically has a lower ceiling or exposed beams. You can either bring the living room ceiling out onto the balcony (by extending the drywall) or create a transitional beam that visually separates the two areas while keeping them connected. Temperature is the biggest challenge —balconies are not insulated like interior rooms. Install double-glazed windows (at least 5mm+12A+5mm) on the balcony railing to create a thermal barrier. Add a ceiling-mounted heating lamp or a small space heater for winter use. If possible, extend your home's HVAC system to include the former balcony area.

Option 2: Semi-Integration (Widen the Doorway)

If full integration is not possible due to structural constraints or building regulations, consider widening the existing doorway. Standard sliding doors are typically 6-8 feet wide. By replacing the door frame with a wider opening (10-14 feet) and using folding glass doors (also called accordion doors or bi-fold doors), you create a much stronger visual and physical connection between the two spaces. When the folding doors are fully open, the balcony feels like a seamless extension of the living room. When closed, they provide thermal and acoustic separation. The folding door system should be installed after removing the original sliding door frame and expanding the opening. This is a structural modification and requires professional assessment. A good-quality folding glass door system (e.g., from brands like Nanawall or Panoramah) costs $800-$1,500 per linear foot installed.

How to Furnish the Merged Space

Once the balcony is integrated, the key to making it feel intentional rather than like "a balcony with furniture" is to treat the entire merged space as one room. Use the same flooring material throughout —if your living room has engineered wood, extend it onto the balcony (with a waterproof underlayment). Use the same wall color or at least complementary tones. The former balcony area should have a designated function. The most popular uses are: a reading nook (a comfortable armchair + floor lamp + small side table), a dining extension (a small bistro table for two), a home office corner (a narrow desk against the railing), a plant sanctuary (tiered plant stands and hanging planters), or a yoga/meditation space (a mat, a cushion, and a small shelf for candles and incense). Avoid using the balcony area as storage —the moment you stack boxes there, it reverts to feeling like a neglected balcony. The furniture should be scaled to the smaller dimensions of the balcony area. A 30-inch wide console table fits better than a 48-inch desk. A compact armchair is better than a full-size lounge chair.

Lighting and Window Treatments

Lighting in a merged balcony-living room requires careful planning. The former balcony area loses its overhead light when the ceiling is integrated, so you need to add task lighting and ambient lighting. Install recessed ceiling lights in the balcony area, or use a track light system that spans both areas. Add a floor lamp in the balcony corner for warm ambient light. For window treatments, the integrated space needs a unified solution. Roman shades or floor-length curtains mounted at the junction between the living room and balcony create a cohesive look. If privacy is a concern (especially if the balcony faces a neighboring building), consider top-down-bottom-up cellular shades that let in light from the top while blocking ground-level views. For sun control, apply UV-blocking window film to the balcony windows —it reduces heat gain by up to 70% without significantly reducing visible light.

Real-World Example: A Shanghai Makeover

One of my favorite projects was a 540-square-foot (50 square meter) apartment in Shanghai's Jing'an district. The living room was just 12x13 feet, and the balcony was 3x10 feet —a narrow, underutilized strip. We removed the sliding door, raised the balcony floor by 4 inches to match the living room level, and installed double-glazed windows on the balcony railing. The result was a continuous 15x13 foot living space. On the former balcony, we placed a 30-inch wide console table that functions as a home office desk, a compact armchair for reading, and a ladder-style plant stand with five tiers of trailing plants. The total renovation cost was approximately $3,500 (floor leveling, windows, paint, lighting, and furniture). The homeowner reported that the apartment felt 40% larger after the merge —and a follow-up appraisal showed the property value increased by about $15,000.

Integrating a balcony into your living room is not about adding square footage on paper —it is about adding usable, livable space that you actually use every day. A balcony that stores forgotten boxes is a wasted asset. A balcony that becomes part of your living room is a daily gift.

Merging your living room and balcony is one of the most satisfying renovation projects you can undertake. The before-and-after transformation is dramatic, the cost is relatively low compared to other renovations, and the daily benefit is enormous. With proper planning, the right approvals, and thoughtful design, you can effectively gain 50 square feet of living space —for free.